Juniper JUNOSE 11.1.X - QUALITY OF SERVICE CONFIGURATION GUIDE 3-21-2010, Configuration Manual

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Guidelines for Controlling the Simple Shared Shaper Algorithm
You can configure the simple shared shaper variables individually, but it is useful to
use configuration guidelines to determine how the variables work together to achieve
a desired behavior.
Table 8 on page 93 displays guidelines for configuring the most liberal shared shaper
to the most conservative shared shaper.
■
Most liberal—Appropriate when over-queuing is not a concern
■
Liberal—Appropriate when over-queuing is not a concern and a smoother rate
adjustments are desirable
■
Moderate—Default settings
■
Conservative—Appropriate when over-queuing is a major concern
■
Most conservative—Rarely appropriate.
Table 8: Guidelines for Configuring Simple Shared Shaper Algorithm Variables
Most
Conservative
Conservative Moderate Liberal
Most
Liberal
Control
99 75 50 25 0 convergence-factor
1000 600 400 25 0 maximum-voql
1000 300 200 50 0 reaction-factor
Related Topics
Simple Shared Shaping Algorithm Overview on page 89
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■
Configuring Simple Shared Shaper Algorithm Variables on page 93
Configuring Simple Shared Shaper Algorithm Variables
To configure the variables for all simple shared shapers on the router:
1.
Enter QoS Shared Shaper Control Configuration mode.
host1(config)# qos-shared-shaper-control
host1(config-qos-shared-shaper-control)#
2.
(Optional) Configure the convergence factor for all simple shared shapers on the
router.
host1(config-qos-shared-shaper-control)# convergence-factor 25
Guidelines for Controlling the Simple Shared Shaper Algorithm
■ 93
Chapter 11: Configuring Variables in the Simple Shared Shaping Algorithm